F. Lacour-Gayet, J. P. Jacobs, D. R. Clarke, B. Maruszewski, M. L. Jacobs, S. M. O'Brien, and C. Mavroudis. Evaluation of the Quality of Care in Congenital Heart Surgery: Contribution of the Aristotle Complexity Score. Advances in Pediatrics, Elsevier, volume 54, issue 1, pages 67-83, 2007. S. M. O'Brien, J. P. Jacobs, D. R. Clarke, B. Maruszewski, M. L. Jacobs, W. I. H. L., C. I. Tchervenkov, K. F. Welke, Z. Tobota, G. Stellin, C. Mavroudis, J. L. Hamilton, J. W. Gaynor, M. Pozzi, and F. G. Lacour-Gayet. Accuracy of the Aristotle Basic Complexity Score for Classifying the Mortality and Morbidity Potential of Congenital Heart Surgery Operations. The Annals of Thoracic Surgery, Elsevier, volume 84, issue 6, pages 2027-2037, December 2007. J. P. Jacobs, M. L. Jacobs, C. Mavroudis, B. Maruszewski, C. I. Tchervenkov, F. G. Lacour-Gayet, D. R. Clarke, T. J. Yeh, H. L. I. Walters, H. Kurosawa, G. Stellin, T. Ebels, M. J. Elliott, D. F. Vener, P. Barach, O. J. Benavidez, and E. A. Bacha. What is Operative Morbidity? Defining Complications in a Surgical Registry Database. The Annals of Thoracic Surgery, Elsevier, volume 84, issue 4, pages 1416-1421, October 2007. J. P. Jacobs, C. Mavroudis, M. L. Jacobs, B. Maruszewski, C. I. Tchervenkov, F. G. Lacour-Gayet, D. R. Clarke, J. W. Gaynor, T. L. Spray, H. Kurosawa, G. Stellin, T. Ebels, E. A. Bacha, H. L. Walters, and M. J. Elliott. Nomenclature and Databases --- The Past, the Present, and the Future. Pediatric Cardiology, volume 28, issue 2, pages 105-115, April 2007.